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From: "Russell O'Connor" <roconnor@blockstream.io>
Date: Wed, 14 Feb 2018 09:08:01 -0500
Message-ID: <CAMZUoK=xUDdNxEh7GYku27Smre3qm5zrmz7tEeZecn-2RBh_Eg@mail.gmail.com>
To: Peter Todd <pete@petertodd.org>
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Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Revisiting BIP 125 RBF policy.
Precedence: list

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On Mon, Feb 12, 2018 at 6:42 PM, Peter Todd <pete@petertodd.org> wrote:

> On Mon, Feb 12, 2018 at 06:19:40PM -0500, Russell O'Connor wrote:
> > Surely CPFP is already computing the package-fee rates of mempool
> > transactions.  That is the value we need to compute.
>
> True, maybe we can just reuse the CPFP calculation now. That said, AFAIK
> that's
> only done in the miner code, not the mempool, so that may not be trivial to
> actually do.
>

Do you (or anyone else) know if the package fee rate is considered when
ejecting transactions from the bottom of the mempool when the mempool gets
too large?

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">On M=
on, Feb 12, 2018 at 6:42 PM, Peter Todd <span dir=3D"ltr">&lt;<a href=3D"ma=
ilto:pete@petertodd.org" target=3D"_blank">pete@petertodd.org</a>&gt;</span=
> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex"><span class=3D"">On Mon, Feb 12,=
 2018 at 06:19:40PM -0500, Russell O&#39;Connor wrote:</span><span class=3D=
""><br>
&gt; Surely CPFP is already computing the package-fee rates of mempool<br>
&gt; transactions.=C2=A0 That is the value we need to compute.<br>
<br>
</span>True, maybe we can just reuse the CPFP calculation now. That said, A=
FAIK that&#39;s<br>
only done in the miner code, not the mempool, so that may not be trivial to=
<br>
actually do.<br></blockquote><div><br></div><div>Do you (or anyone else) kn=
ow if the package fee rate is considered when ejecting transactions from th=
e bottom of the mempool when the mempool gets too large?<br></div></div></d=
iv></div>

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